package pattern.behavioral.chain;

public abstract class AbstractLogger {

    public static int INFO = 1;
    public static int DEBUG = 2;
    public static int ERROR = 3;

    protected int level;

    //责任链中的下一个元素
    protected AbstractLogger nextLogger;

    public void setNextLogger(AbstractLogger logger){
        this.nextLogger = logger;
    }

    public void logMessage(int level,String message){
        if(this.level <= level){
            write(message);
        }
        if(nextLogger != null){
            nextLogger.logMessage(level,message);
        }
    }

    abstract protected void write(String message);
}
